Mechanism for converting reciprocating into rotary motion.



R. z. PARMER. MECHANISM FOR CONVERTING REGIPROGATING INTO ROTARY MOTION.

APPLICATION FILED NOV. 26. 1913.

Patented Nov. 10, 1914.

2 SHEETS-SHEET 1.

wumto a ROBERT Z. FHRMER.

THE NORRIS PETERS CO. PHOTU-LITHQ, WASHINGTON, D- C.

R. z. PARMER. MECHANISM FOR CONVERTING REGIBROOATING INTO ROTARY MOTION.

APPLICATION FILED NOV. 26, 1913. I

1,1 16,810, Patented N0v.10,191 L 2 SHEETS-SHEET 2.

m neuter RQBERTZ- Fa RM ER,

THE NORRIS PETERS CO, PHUTO-LITHQ. WQISHINGI'ON, D. C

ROBERT Z. FARMER, OF BISBEE, ARIZONA.

MECHANISM non CONVERTING. n-ncirnocArrNs IN'ro ROTARY MOTION.

Specification of Letters Patent.

, Patented Nov. 10, 1914.

Application filed November 26, 1913. Serial No. 803,220.

To all-whom it may concern: r

Belt known that I, ROBERT A. Famine, citizen of the United States,residing at Bisbee, in the county of Cochise and State of Arizona, haveinvented certain new and useful Improvements in vMechanism forConverting Reciprocating Into Rotary Motion, of which the following is aspecification, reference being had to the accompanying drawings.

This invention relates to mechanism forconverting reciprocating intorotary motion and has for its primary object to provide a device forthis purpose wherein the full power of the reciprocating element isutilized and waste of energy overcome.

Theinvention has for another of itsobjects to provide a pair of shafts,a ratchet fixed uponeach shaft, a gear wheel provlded with dogs toengage the ratchet, a pair of racks connected to the reciprocatingelement and engaging the respective gear wheels, said gear wheels beingalternately locked uponthe respective ratchets by said pawls in thereciprocating movement of the racks in opposite directions, a drivenshaft, and means for transmitting motion from said first named shafts tothe driven shaft constantly. in one direction. a

The invention has for a further object to produce a mechanism of theabove character which is comparatively simple in its construction, ishighly durable and eflicient in practical use and may be manufactured atsmall cost.

,lViththe above and other objects in View asvwill become apparent as thedescription proceeds, the invention consists in certain constructions,combinations and arrangements of the parts that I shall hereinafterfully describe and claim.

Fora full understanding of the invention, reference is to be had to thefollowing description and accompanying drawings, in which p Figure 1 isa top'plan view illustrating the preferred construction of my invention;Fig. 2 is a section taken on the. line 22 of Fig. 1; Fig. 3 is anenlarged detail section taken on the line 33 of Fig. 1; Fig. 1 is asectiontaken on the line 4,41- of Fig. 1; Fig. 5 is an enlarged detailfragmentary section of one of the ratchets and. gear mounted thereon;Fig. 6 is a detail side elevation of one of the collars which is fixedupon the power shaft; Fig. 7 is an enlarged' detail section illustratingthe mounting of the inner ends of the shafts; Fig. 8 is a detail sideelevation of the guide memberfor. the reciprocating racks; Fig. 9 is adetail section taken on the line 9-9 of Fig. 1.

Referring in detail to the drawings, 5 designates a base of any suitableconstruction upon which the standards 6 are arranged. Additional bearingstandards 7 are arranged at opposite sides of the base and in thesestandards the outer ends of shafts 8 are journaled. These shafts aremounted in the standards 6. It will be observed that one of said shaftsis provided with a reduced inner end which is. telescopically engaged ina socket provided in the opposed end of the .other shaft, as clearlyindicated at 9 in Fig.

7. Upon each of the shafts 8 a ratchet 10 is keyed or otherwise secured,said ratchet being held against longitudinal movement by suitablecollars 11 arranged upon oppo site sides of the ratchet and secured tothe shaft by suitable screws 12. .Each of the collars is provided withan annular flange 18 which is adapted to engage in a recess 14 providedin the face of a gear 15. These collar flanges serve to retain the gearin place and to hold the same against longitue dinal .movement withrespect to the shaft. In the inner wall of the gear 15, a plurality oflocking pawls or dogs 16 are pivotally mounted, said dogs being normallyheld by means of the springs 17 with their free ends in engagement withthe teeth 10? of the ratchet 10. It is to be understood that the ratchetteeth and thelocking pawls 16 upon one of the shafts 8 project in anopposite direction relative to the pawls and the teeth on the other ofsaid shafts.

1S designates the piston of ages engine or other power producing machineand to said piston, a forked bar 19 is suitably, secured. To each of thearms of this bar, one end 'of arack bar QOlSfiXGd, the lower face ofsaid bar being provided withteeth 21. These rack bars engage with therespective gears 15 and rotate the same in the reciprocating movement ofsaid racks. In order to hold the teeth of the rack bars in engage mentwith the gear teeth, I provide the .member 22 which is providedadjacentvi'ts ends with spaced flanges 23. Betweenthese flanges the;rack, bars 20 are movably disposed, said flanges extending downwardlyupon opposite sides of the gears15. The I that my guide member 22 issuitably secured to the upper ends of the standards 6.

Each of the collars 11 is provided at the juncture of the flange 13 withthe body of said collar, with a semi-circular series of apertures 2athrough which a suitable lubricant is supplied to the shaft 8. It willbe understood from reference to Fig. 3 that the lubricant is applied tothe inner faces of the guide flanges 23 so as to facilitate the movementof the rack bar and eliminate friction of said flanges upon the gears15. This lubricant flows inwardly as indicated by the arrows and finallyenters the outer ends of the inclined openings 2d whereby the same isdirected to the shaft.

Additional standards 25 are mounted upon the base 5 in which the ends ofthe driven shaft 26 are journaled. This shaft is provided with asuitable belt wheel 27 which is traversed by the belt 28 extending tothe machine which it is desired to operate. One

-. end of the driven shraft is provided with a gear 29 which meshes witha large gear 30 fixed upon one of the shafts 8. The other end of theshaft 26 has a sprocket wheel 31 fixed thereto which is connected bymeans of the chain 32 to a similar sprocket wheel 33 upon the othershaft 8.

From the above description taken in connection with the accompanyingdrawings, it is believed that the construction and manner of operationof my improved motion converting mechanism will be clearly and fullyunderstood. In the operation of thepiston 18, the racks 21 arereciprocated and in their movement in one direction, one of the shafts 8is positively rotated with respect to the other shaft, the gear 15thereon being in locked engagement with the ratchet 10. As the othergear wheel is loose, the same'will be rotated by the rack which isengaged therewith with respect to the associated ratchet. Thus, theshaft which is rotated by the longitudinally moving rack bar transmitsmotion to the shaft 26 through the medium of the chain 32 or the gears29 and 30, as the case may be, while the other of said shafts is rotatedin theopposite direction. Upon the reverse longitudinal movement of therack bars 21, the rotation of the shafts 8 is also reversed, and thegear 15 which was previously loose upon the shaft is now lockedtherewith throughthe medium of its pawls 16 and the ratchet 10. Thus, bya direct longitudinal thrust of the rack bars, I positively impart aconstant rotary motion to the shaft 26 and utilize substantially theentire power of the reciprocating piston18 for this purpose, therespectiverack bars 20 alternately operating through the medium of theshafts 8 to rotate the power-shaft 26.

It will be appreciated from the above improved mechanism while of verysimple construction is highly eificient in practical operation and maybe economically operated. While I have shown and described the preferredconstruction and ar rangement of the several parts employed, it will beobvious that the invention is susceptible of considerable modificationtherein and I therefore reserve the right to resort a power shaft,gearing connecting the opposite ends of the power shaft to therespective first named shafts whereby the power shaft is rotated in onedirection upon the alternate rotation of the first named shafts inopposite directions, a reciprocatory member, spaced racks connected tosaid member,

gears mounted upon each of the first named shafts and connected by therespective racks, and means for locking the gears upon the respectiveshafts in the reciprocating movement of the racks in oppositedirections.

2. In mechanism of the character described, the combination of a pair ofshafts having alined longitudinal axes, the endof one shaft telescopingin the opposed end of 1 I the other shaft, a power shaft, gearingconnecting the opposite ends of the power shaft to the respective firstnamed shafts, whereby said power shaft is constantlyrotated in onedirection by the reverse alternate rotation of the first named shafts, aratchet fixed upon each of-said first named shafts, a gear mounted uponeach of said ratchets, means fixed upon the shaft to preventlongitudinal movement of the ratchets thereon P and to hold the gearsagainst longitudinal movement with respect to the ratchets, lookingmeans carried by the gear for engagement with the teeth of the ratchetto lock the gear thereto in its movement in one (31- rection, areciprocating member, spaced racks connected to said member and engagedwith the respective gears, and guide members for said racks to retainthe same in engagement with the gears whereby said first named shaftsare alternately rotated in reverse directions upon the oppositereciprocating movements of said racks.

3. In mechanism of the character described, the combination of a pair ofshafts having their longitudinal axes alined, a power shaft, gearingconnecting the opposite ends of the power shaft to the respective firstnamed shafts whereby the power shaft is constantly rotated in onedirection upon the alternating reverse rotations of the first namedshafts, a ratchet fixed upon each of the first named shafts, a gearmounted upon each of said ratchets, spring pressed dogs carried by thegear for engagement with the ratchet teeth whereby the gears are lockedupon the respective shafts to rotate the same in opposite directions,reciprocating racks engaged with the respective gears, a guide memberhaving spaced pairs ofdepending flanges extending upon opposite sidesofthe respective gears and holding the same against movementlongitudinally of the shaft with respect to the ratchet.

4. In mechanism of he character described, the combination of a pair ofshafts having alined longitudinal axes, a power shaft geared to each ofsaid first named shafts, whereby the power shaft is constantly rotatedin one direction by alter-. nating reverse rotation of the first namedshafts, a ratchet fixed upon each of the first named shafts, collarssecured upon the shafts upon opposite sides of the ratchets, saidcollars having an annular flange, and a plurality of inclined openingsat the baseof the flange for the feed of a lubricant to the shafts, agear mounted upon each of the ratchets, the faces of the gear beingrecessed to receive the collar flanges, reciprocating racks engaged withthe respective gears, means carried by the gears for locking the sameupon the respective ratchets in the movement of the racks in oppositedirections, and a guide member for said racks having spaced pairs ofdepending flanges extending upon opposite sides of the respective gears.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

ROBERT Z. FARMER.

Witnesses D. W. GALL, FREDERICK S. S'rrr'r.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0."

each of

